driver: Fix bootstrap with --enable-default-pie

On IRC Iain mentioned bootstrap is broken for him presumably since
r14-5791 -fhardened addition.  I think it is only a problem with
--enable-default-pie when the case OPT_pie: wants to fall through
into case OPT_r: and warns.
Before the patch validated = true; was set up if ENABLE_DEFAULT_PIE
for OPT_pie, and for -fhardened as documented I think we want to
set any_link_options_p = true; for it too:
/* True if -r, -shared, -pie, or -no-pie were specified on the command
   line.  */
static bool any_link_options_p;

2023-12-06  Jakub Jelinek  <jakub@redhat.com>

	* gcc.cc (driver_handle_option): Add /* FALLTHROUGH */ comment
	between OPT_pie and OPT_r cases.

1 files changed, 1 insertions, 0 deletions

diff --git a/gcc/gcc.cc b/gcc/gcc.cc
index 9f21ad9..03ec6e1 100644
--- a/gcc/gcc.cc
+++ b/gcc/gcc.cc
@@ -4617,6 +4617,7 @@ driver_handle_option (struct gcc_options *opts,
       /* -pie is turned on by default.  */
       validated = true;
 #endif
+      /* FALLTHROUGH */
     case OPT_r:
     case OPT_shared:
     case OPT_no_pie: